Initial timing tests. 7.4.2 is the benchmark 7.4.2 vs newer versions processing time #1299

__tests__/ImportExcelTests/ImportExcelTiming.tests.ps1

@@ -0,0 +1,11 @@
+Import-Module $PSScriptRoot\..\..\ImportExcel.psd1 -Force
+
+Describe "Tests Import-Excel Timings" -Tag Timing {
+    It "Should read the 20k xlsx in -le 2100 milliseconds" {
+        $timer = Measure-Command {
+            $null = Import-Excel $PSScriptRoot\Rows20k.xlsx
+        }
+
+        $timer.TotalMilliseconds | Should -BeLessOrEqual 2100        
+    }
+}